Fig. 3From: Early prediction of high flow nasal cannula therapy outcomes using a modified ROX index incorporating heart ratea–c Kaplan-Meier plots of HFNC success probability based on ROX-HR index at 2, 6 and 10 h for patients initiated on HFNC for acute respiratory failure. d, e Kaplan-Meier plots of HFNC success probability based on ROX-HR index at 2, 6 and 10 h for patients initiated on HFNC after a planned extubationBack to article page